I have got 5-31x10.50x15 super swamper tsl's mounted on 4-15x7 stock jeep steelies. 3 of the tires are down to the wear bars in the middle but have plenty of lugs on the outside. The other 2 are i'd say about 50%. They all hold air and do a good job offroad. Only had them on the trail once since i have had them. Am asking $130 obo. If you are interested i can get you some pics of them.

Thanks,
Ben